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kenny6666 [7]
2 years ago
9

Determine the average velocity and average speed for the following situation. A dog runs west for 35 meters then turns east for

45 meters stops then continues east for 65 meters. The time for the total trip is 85 seconds.
Physics
1 answer:
mart [117]2 years ago
7 0

Answer:

0.882 m/s average velocity and 1.71 m/s average speed

Explanation:

The dog travels a total of 35 m west and 110 m east.

110-35 = 75 m east of the starting position. Since velocity is a vector you must consider its first and final position and not the total distance traveled.

75 m / 85 s = 0.882 m/s average velocity

Speed is not concerned with direction so we instead add the total distance traveled which is 35+110 = 145 m. We then perform the same operation as before and divide by the time it took to run this distance.

145 m / 85 s = 1.71 m/s average speed

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Answer:5000000000hertz

Explanation:

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Frequency=5000000000 hertz

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What increases as the temperature of a solid object rises?
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Option a; Electric field can accelerate an electron, but never change its speed

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4 0
1 year ago
What is the magnitude of the momentum of a 3400 kg airplane traveling at a speed of 450 miles per hour?
Vitek1552 [10]

Answer:

The magnitude of momentum of the airplane is 6.83\times 10^5\ kg-m/s.

Explanation:

Given that,

Mass of the airplane, m = 3400 kg

Speed of the airplane, v = 450 miles per hour

Since, 1 mile per hour = 0.44704 m/s

v = 201.16 m/s

We need to find the magnitude of momentum of the airplane. It is given by the product of mas and velocity such that,

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